Guard some simplex test with use_metis=on

diff --git a/tests/simplex/data_out_write_hdf5_02.mpirun=4.with_hdf5=on.output b/tests/simplex/data_out_write_hdf5_02.mpirun=4.with_hdf5=on.with_metis=on.output
similarity index 100%
rename from tests/simplex/data_out_write_hdf5_02.mpirun=4.with_hdf5=on.output
rename to tests/simplex/data_out_write_hdf5_02.mpirun=4.with_hdf5=on.with_metis=on.output

diff --git a/tests/simplex/poisson_01.mpirun=1.with_trilinos=true.output b/tests/simplex/poisson_01.mpirun=1.with_trilinos=true.with_metis=true.output
similarity index 100%
rename from tests/simplex/poisson_01.mpirun=1.with_trilinos=true.output
rename to tests/simplex/poisson_01.mpirun=1.with_trilinos=true.with_metis=true.output

diff --git a/tests/simplex/poisson_01.mpirun=4.with_trilinos=true.output b/tests/simplex/poisson_01.mpirun=4.with_trilinos=true.with_metis=true.output
similarity index 100%
rename from tests/simplex/poisson_01.mpirun=4.with_trilinos=true.output
rename to tests/simplex/poisson_01.mpirun=4.with_trilinos=true.with_metis=true.output

diff --git a/tests/simplex/step-40.mpirun=4.with_petsc=true.output b/tests/simplex/step-40.mpirun=4.with_petsc=true.with_metis=true.output
similarity index 100%
rename from tests/simplex/step-40.mpirun=4.with_petsc=true.output
rename to tests/simplex/step-40.mpirun=4.with_petsc=true.with_metis=true.output

diff --git a/tests/simplex/step-55.mpirun=2.with_petsc=true.output b/tests/simplex/step-55.mpirun=2.with_petsc=true.with_metis=true.output
similarity index 100%
rename from tests/simplex/step-55.mpirun=2.with_petsc=true.output
rename to tests/simplex/step-55.mpirun=2.with_petsc=true.with_metis=true.output

diff --git a/tests/simplex/step-67.mpirun=2.output b/tests/simplex/step-67.mpirun=2.with_metis=true.output
similarity index 100%
rename from tests/simplex/step-67.mpirun=2.output
rename to tests/simplex/step-67.mpirun=2.with_metis=true.output